TECHNICAL PAPERS: Gas Turbines: Combustion and Fuel

Forced Low-Frequency Spray Characteristics of a Generic Airblast Swirl Diffusion Burner

[+] Author and Article Information
J. Eckstein, E. Freitag, C. Hirsch, T. Sattelmayer

Lehrstuhl fur Thermodynamik, Technische Universitat Munchen, 85747 Garching, Germany

R. von der Bank, T. Schilling

Rolls-Royce Deutschland Ltd. & Co. KG, Combustor Aerodynamics, Eschenweg 11, 15827 Dahlewitz, Berlin, Germany

J. Eng. Gas Turbines Power 127(2), 301-306 (Apr 15, 2005) (6 pages) doi:10.1115/1.1789515 History: Received October 01, 2002; Revised March 01, 2003; Online April 15, 2005
Copyright © 2005 by ASME
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Grahic Jump Location
(Color online) Comparison of measured pressure amplitudes (symbols) and velocities (lines) over frequency for three mass flow rates in a noncombusting environment
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(Color online) Air velocity and Mie scattering intensity fluctuation for the spray at 130-Hz excitation
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Phase-locked velocity field at 90 Hz without combustion: the left half shows two contour levels of velocity magnitude for all ten phase angles, the right half shows the same field scaled with the average velocity at the burner exit
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(Color online) SMD over relative AMF for different preheating temperatures in the stationary, noncombusting case
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(Color online) Comparison of unsteady SMD (symbols) data with the steady atomization curve at 1.0-g/s fuel mass flow rate
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(Color online) Comparison of unsteady SMD (symbols) data with the steady atomization curve at 1.8-g/s fuel mass flow rate
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Mie scattering images of the spray cone with combustion at ṁ/ṁ0=1.6, fuel flow rate of 1.3 g/s, Tair=430 K, and f=130 Hz. The contours show constant levels of scattered intensity. Left half: minimum velocity phase; right half: maximum velocity phase. Crown lines show constant spray geometry.
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(Color online) Schematic representation of the test rig
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(Color online) Schematic representation of the position of the PIV-investigation area (light gray) and the Malvern laser beam (dark gray) in the vertical center plane of the combustion chamber relative to the injector outlet




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